7.11.3.9 IfcReinforcementDefinitionProperties

7.11.3.9.1 Semantic definition

IfcReinforcementDefinitionProperties defines the cross section properties of reinforcement included in reinforced concrete building elements. The property set definition may be used both in conjunction with insitu and precast structures.

This subtype of IfcPropertySetDefinition is used to define the reinforcement properties in early design stages, such as in requirement definition or scheme design. In later design stages explicit instances of subtypes of IfcReinforcingElement are used. The intended usage may be indicated using the DefinitionType attribute value as a designator: recommended values are 'Reinforcement area requirement' or 'Reinforcement configuration requirement'. Other values may be used according to local standards.

Only one property set definition of this kind is used for each concrete building element in each intended usage indicated by the DefinitionType attribute value. This set then defines a list of cross section properties in a discrete number of longitudinal sections as instances of IfcSectionReinforcementProperties (one for each structural reinforcement bar role), which in turn have a section cross section property defined as a profile and a number of reinforcement properties, one for each steel grade / bar type.

7.11.3.9.2 Entity inheritance

1. • IfcRoot
2. • IfcPropertyDefinition
   • IfcObjectDefinition
   • IfcRelationship
3. • IfcPropertySetDefinition
   • IfcPropertyTemplateDefinition
4. • IfcPreDefinedPropertySet
   • IfcPropertySet
   • IfcQuantitySet
5. • IfcReinforcementDefinitionProperties
   • IfcDoorLiningProperties
   • IfcDoorPanelProperties
   • IfcPermeableCoveringProperties
   • IfcWindowLiningProperties
   • IfcWindowPanelProperties

7.11.3.9.3 Attributes

#	Attribute	Type	Description
IfcRoot (4)
1	GlobalId	IfcGloballyUniqueId	Assignment of a globally unique identifier within the entire software world.
2	OwnerHistory	OPTIONAL IfcOwnerHistory	Assignment of the information about the current ownership of that object, including owning actor, application, local identification and information captured about the recent changes of the object,
3	Name	OPTIONAL IfcLabel	Optional name for use by the participating software systems or users. For some subtypes of IfcRoot the insertion of the Name attribute may be required. This would be enforced by a where rule.
4	Description	OPTIONAL IfcText	Optional description, provided for exchanging informative comments.
IfcPropertyDefinition (2)
	HasContext	SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions	Reference to the relationship IfcRelDeclares and thus to the IfcProject or IfcProjectLibrary.
	HasAssociations	SET [0:?] OF IfcRelAssociates FOR RelatedObjects	Reference to the relationship IfcRelAssociates and thus to those externally defined concepts, like classifications, documents, or library information, which are associated to the property definition.
IfcPropertySetDefinition (3)
	DefinesType	SET [0:?] OF IfcTypeObject FOR HasPropertySets	The type object to which the property set is assigned. The property set acts as a shared property set to all occurrences of the type object.
	IsDefinedBy	SET [0:?] OF IfcRelDefinesByTemplate FOR RelatedPropertySets	Relation to the property set template, via the objectified relationship IfcRelDefinesByTemplate, that, if given, provides the definition template for the property set or quantity set and its properties.
	DefinesOccurrence	SET [0:?] OF IfcRelDefinesByProperties FOR RelatingPropertyDefinition	Reference to the relation to one or many object occurrences that are characterized by the property set definition. A single property set can be assigned to multiple object occurrences using the objectified relationship IfcRefDefinesByProperties.
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IfcReinforcementDefinitionProperties (2)
5	DefinitionType	OPTIONAL IfcLabel	Descriptive type name applied to reinforcement definition properties.
6	ReinforcementSectionDefinitions	LIST [1:?] OF IfcSectionReinforcementProperties	The list of section reinforcement properties attached to the reinforcement definition properties.

7.11.3.9.4 Concept usage

Concept	Usage	Description
IfcRoot (2)
Revision Control	General	Ownership, history, and merge state is captured using IfcOwnerHistory.
Software Identity	General	IfcRoot assigns the globally unique ID. In addition it may provide for a name and a description about the concept.
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7.11.3.9.5 Formal representation

ENTITY IfcReinforcementDefinitionProperties
 SUBTYPE OF (IfcPreDefinedPropertySet);
	DefinitionType : OPTIONAL IfcLabel;
	ReinforcementSectionDefinitions : LIST [1:?] OF IfcSectionReinforcementProperties;
END_ENTITY;

7.11.3.9.6 References

• IfcPreDefinedPropertySet